title: Kinetics of reduction of the primary donor of photosystem II. Influence of pH in various preparations.
abstract: The kinetics of reduction of P-680, oxidized by a flash, have been measured with chloroplasts treated with Tris, hydroxylamine or cholate, with PS-II particles from Phormidium (Tris-treated) and with subchloroplast particles prepared with digitonin or Triton. In all cases the electron transfer from D1 to P-680+ has similar rates, influenced similarly by pH and D1 has a one-electron capacity.
mesh_terms: D002734:Chlorophyll / Q000378:metabolism*; D002736:Chloroplasts / Q000187:drug effects / Q000378:metabolism*; D000458:Cyanobacteria / Q000378:metabolism*; D004072:Digitonin / Q000494:pharmacology; D004579:Electron Transport; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008027:Light; D010788:Photosynthesis / Q000187:drug effects; D010944:Plants / Q000378:metabolism; D013053:Spectrophotometry
chemical_list: D002734:Chlorophyll; C025167:P-680; D004072:Digitonin